Heating-furnace.



. Patented Feb.- H, I902. S. DIESBHER.

HEATING FURNACE.

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INVENTOR 'No.. 693,l20. Patented Feb. ll, I902.

' S'. DIESCHEB.

HEATING FURNACE.

(Application filed Maly 20, 1901.) (No Model.) a Sheets-Sheet 2.

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Patented Feb. ll, I902.

s. DIES CHER. HEATING FURNACE.

(Application filed May 20, 1901.]

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7 type of furnace forming the subject-matter bottom or floor of the heating-chamber.

UNITED TATES SAMUEL DIESCI'IER, OF PITTSBURG', PENNSYLVANIA, ASSIGNOR TO SAMUEL DIESOIIER do SONS, OF PITTSBURG,

OF PENNSYLVANIA.

PENNSYLVANIA, A COPARTNERSHIP HEATING-FURNACE.

SPECIFICATION iorrcing part of Letters Patent No. 693,120, dated February 11, 1902.

Application filed May 20, 1901.

To all whom it puny concern.-

Be it known that I, SAMUEL DIESCHER, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented or discovered certain new and useful Improvements in Heating-Furnaces, of which improvements the following is a specification.

The invention described herein relates to certain improvements in furnaces for the progressive heating of long lengths of metal rods, strips, &c.

In an application, Serial No. (51,033, filed May 19, 1901, I have described and claimed a furnace consisting of a heatingchamber and a series of combustion-chambers arranged at intervals along the furnace and below the The invention set forth herein consists in certain further or additional improvements in the of said application.

In the accompanying drawings, forming a part of this specification, Figures 1 and 2 are longitudinal sections on planes indicated, re spectively, by the lines I I and II II, Fig. 3. Figs. 3 and 4 are transverse sections on planes indicated, respectively, by thelines III III and- IV IV, Fig. 1.. Fig. 5 is a horizontal section on a plane indicated by the line V V, Fig. 3. Fig. 6 shows a plan and sectional elevation of the combustion-box, and Fig. 7 is an end elevation of the same.

The furnace is formed with the long continuous heating-chamber 1, having its ends closed by movable doors 2 and 3. Above the heating-chamber is formed a flue or passage 4, openat one end and connected by a series of ports 5 with side lines 6 and 7. These side fines are connected by ports 8 and 9 with the fire boxes or chambers 10, which are preferably formed of metal and embedded in the bottom of the furnace, with their upper surfaces flush, or nearly so, with the bottom of the heating-chamber. The ports 8 and 9 are formed in the ends of these fire boxes or chambers and are adapted to be closed by slidevalves 11, moving in suitable guides formed in the top of the fire-boxes. Within these fire-boxes are placed burners 12, having their Serial No. 61,034. (No model.)

outer ends connected with suitable gas-supply pipe 13 and having valves 14 arranged between the supply-pipe and the burners. Through the upper walls of the fire-boxes are formed slots 15, through which the heat and products of combustion can pass up into the heatingchamber, from which they escape through the outlet-flue 16, located-at the front or charging end of the furnace.

In using this furnace the rods or strips of metal are passed into the charging end and thence move continuously through the furnace, being subjected during their traverse of the furnace to gradually-increasing heat. By the proper regulation of the air and gas valves the heat to which the rods are subjected at any point in their traverse can be increased or decreased, as required, by the size of the rods or strips and their rate of movement through the furnace. The air used enters the flue 4 above the heating-chamber and passes down through the side fines 6 and 7, so that it will become highly heated by contact with the highly-heated inner walls of said flues and will in turn heat the gas as it com mingles therewith, so that the furnace oper= ates to a large extent upon the regenerative principle. As the combustion occurs within the fire-boxes only the heat and products of combustion will come into contact with the rods or strips, so that the latter will not be subjected to any severe cutting action or 0X1 dation. The number and location of the fire-boxes will be dependent upon the length of the heating-chamber and the size of articles to be heated and the desired speed of movement of the articles through the fur naoe.

I claim herein as my invention- 1. A furnace having in combination a heating chamber having oppositely arranged charging and discharging openings, a series of fire boxes or chambers arranged below the fioor of the heating-chamber and provided with openings at an angle to a straight line passing through the charging and discharging openings for the passage of heat and products of combustion into the heating-chamber, and burners arranged in the fire boxes or chambers, substantially as set forth.

2. Afurnace having in combination a heatranged in the fire-boxes, substantially as set 10 ing-ehamber having charging and discharging forth. openings at its ends, air-fines extending along In testimony whereof I have hereunto set the top and sides of the heating-chamber, a my hand.

series of two or more slotted fire boxes or i chambers arranged transversely of the heat- I SAMUEL DIESCHER" ing-cha-mber and below the floor thereof, valved ports connecting the ends of the fire boxes with the air-fines, and burners ar- Witnesses:

DARWIN S. WoLeoTT, F. E. GAITHER. 

